Correlating Structure with Threshold Behavior of Chalcogenide Glasses Within Ge-Sn-Se Ternary System

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• 作者：Beijing Qiao ; Feifei Chen ; Yicong Huang ; Ruiqiang Lin ; Xiaoyu Zhang ; Shixun Dai ; Xiang Shen ; Qiuhua Nie and Xianghua Zhang
• 刊名：Journal of the American Ceramic Society
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：100
• 期：1
• 页码：108-114
• 全文大小：1335K
• ISSN：1551-2916

文摘

A systematic investigation of the optical and structural properties of chalcogenide glasses in Ge–Sn–Se ternary system is presented. We have found a threshold behavior of optical property, namely, existence of transitional composition of the Ge–Sn–Se glasses, with progressive replacement of Se by Sn. Calculation of mean coordination number indicates that the transition-like feature of optical property is associated with the evolution of chemical ordering of the Ge–Sn–Se network. Analysis of Raman spectra of the glasses explains that the interaction between Se–Se bonds, Sn(Se_1/2)₄ tetrahedra, and Sn–Sn homopolar bonds is the origination of such optical phenomenon.